Append any URL query args to dashboard URL paths

[ntabris]

If you enter http://1.2.3.4/status?token=abc as the dashboard address, the existing code will attempt to hit http://1.2.3.4/status?token=abc/individual-plots.json.

This makes it instead hit http://1.2.3.4/individual-plots.json?token=abc, and also append ?token=abc to the paths of the individual plots.

With this change, it's possible to use dask-labextension with a dashboard that has token-based auth. (We're now doing this in Coiled, using an NGINX sidecar in front of the dashboard.)

[ntabris]

This addresses (2) and (3) in https://github.com/dask/dask-labextension/issues/190#issuecomment-1434881005

[ntabris]

I'll note that loading static assets is requiring some (yet to be determined) shenanigans on our side.

Since the dashboard panes load in iframe, cookies don't work unless the user enables third-party cookies. Getting the auth token in the referer works in Chrome but not Safari, since Safari intentionally doesn't pass along full referer (again, unless you explicitly disable privacy setting).

Suggestions welcome if anything comes to mind.

[ian-r-rose]

Hmm, nothing comes to mind immediately. How does Firefox do?

[ian-r-rose]

Thanks @ntabris!

[ian-r-rose]

I've published this in 6.1.0

[ntabris]

Thanks, much appreciated!